Advertisements
Advertisements
प्रश्न
Write the name of the product when ketones react with 1,2-diol in presence of dry HCl.
Advertisements
उत्तर
The product obtained when ketones react with 1,2-diol in presence of dry HCl is known as cyclic ketal.
APPEARS IN
संबंधित प्रश्न
Answer in brief.
Observe the following equation of reaction of Tollens' reagent with aldehyde. How do we know that a redox reaction has taken place? Explain.
\[\ce{R-CHO + 2Ag(NH_{3})^{+}_{2} + OH^{-}->[\triangle] R-CO{O}^{-} + 2Ag↓ + 4NH3 + 2H2O}\]
Write a reaction to distinguish acetaldehyde from acetone.
Write reactions for the action of the following reagents on p-chlorobenzaldehyde.
Phenyl hydrazine
Aldol condensation between which of the following compounds followed by dehydration gives 4-Methylpent-3-en-2-one?
Identify the INCORRECT reaction.
Identify A in the following reaction.
\[\ce{A + CH3MgBr ->[Ether] complex ->[H3O+] (CH3)3C - OH}\]
Which of the following gives red precipitate with Fehling's solution?
Acetone reacts with iodine (I2) to form iodoform, in the presence of ____________.
Which of the following represents the structure of isopropyl methyl ketone?
Which of the following reagents is used for the following conversion?
\[\ce{CH3 - CH = CH - CHO -> CH3 - CH = CH - CH2OH}\]
Assertion: 2, 2-dimethyl propanoic acid does not give HVZ reaction.
Reason: 2-2, dimethyl propanoic acid does not have α-hydrogen atom.
\[\ce{Benzoic acid ->[i) NH3][ii) \Delta] A ->[NaOBr] B ->[NaNO2/HCl] C}\] ‘C’ is:
Which one of the following reaction is an example of disproportionation reaction.
Phenyl methanal is reacted with concentrated NaOH to give two products X and Y. X reacts with metallic sodium to liberate hydrogen X and Y are ____________.
How will you convert benzaldehyde into the following compound?
Benzoic acid
Complete the following reaction.
\[\begin{array}{cc}
\ce{CH3 - CH2 - CH2 - C - CH3 ->[HO - CH2 - CH2 - CH2 - OH][dry HCl] ?}\\
||\phantom{.........}\\
\ce{O}\phantom{.........}
\end{array}\]
How will you prepare lactic acid from ethanol?
How will you prepare acetophenone from acetyl chloride?
Which of the following compounds is most reactive towards nucleophilic addition reactions?
How propanal is converted into propane.
Which of the following compound will show a positive silver mirror test?
Which of the following compound will give positive iodoform test?
A substance C4H10O yields on oxidation a compound, C4H8O which gives an oxime and a positive iodoform test. The original substance on treatment with a conc. H2SO4 gives C4H8. The structure of the compound is ______.
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
Write the structure of the major product of the aldol condensation of benzaldehyde with acetone.
How are the following compound obtained from alkyne?
Acetone
What is the action of hydrogen cyanide on the following?
Acetone
